scholarly journals Effect of Dorsal and Ventral Hippocampal Lesions on Contextual Fear Conditioning and Unconditioned Defensive Behavior Induced by Electrical Stimulation of the Dorsal Periaqueductal Gray

PLoS ONE ◽  
2014 ◽  
Vol 9 (1) ◽  
pp. e83342 ◽  
Author(s):  
Carolina Irurita Ballesteros ◽  
Bruno de Oliveira Galvão ◽  
Silvia Maisonette ◽  
J. Landeira-Fernandez
Keyword(s):  
Electrical Stimulation ◽  
Fear Conditioning ◽  
Defensive Behavior ◽  
Periaqueductal Gray ◽  
Contextual Fear Conditioning ◽  
Contextual Fear ◽  
Dorsal Periaqueductal Gray ◽  
Hippocampal Lesions ◽  
Stimulation Of

scholarly journals Participation of the rostral anterior cingulate cortex in defensive behavior induced by electrical stimulation of the dorsal periaqueductal gray and contextual fear conditioning

2019 ◽  
Author(s):  
Bruno de Oliveira Galvão ◽  
Alberto Filgueiras ◽  
Silvia Maisonnette ◽  
Thomas E. Krahe ◽  
J. Landeira-Fernandez
Keyword(s):  
Electrical Stimulation ◽  
Fear Conditioning ◽  
Defensive Behavior ◽  
Freezing Behavior ◽  
Contextual Fear Conditioning ◽  
Anterior Cingulate ◽  
Contextual Fear ◽  
Response Thresholds ◽  
Rostral Anterior Cingulate Cortex ◽  
Stimulation Of

AbstractThe rostral anterior cingulate cortex (rACC) is a critical brain structure related to defensive behavior. However, still unclear is whether the rACC also plays a role in defensive behavior induced by electrical stimulation of the dorsal periaqueductal gray (dPAG). In the present study, rats were implanted with electrodes into the dPAG to determine freezing and escape response thresholds after sham or bilateral electrolytic lesions of the rACC. The duration of freezing behavior that outlasted electrical stimulation of the dPAG was also measured. The next day, these animals were subjected to contextual fear conditioning using footshock as an unconditioned stimulus. Lesions of the rACC did not change aversive freezing and escape response thresholds but disrupted post-dPAG stimulation freezing. The lesions also disrupted defensive freezing behavior and analgesia in the formalin test in response to contextual cues previously associated with footshock. These results indicate that the rACC is involved in some but not all aspects of defensive behavior generated at the level of the dPAG. The rACC also appears to play an important role in contextual fear conditioning.

Context fear conditioning inhibits panic-like behavior elicited by electrical stimulation of dorsal periaqueductal gray

Neuroreport ◽  
2003 ◽  
Vol 14 (12) ◽  
pp. 1641-1644 ◽  
Author(s):  
Valeska Magierek ◽  
Patrício L. Ramos ◽  
Nylson G. da Silveira-Filho ◽  
Regina L. Nogueira ◽  
J. Landeira-Fernandez
Keyword(s):  
Electrical Stimulation ◽  
Fear Conditioning ◽  
Periaqueductal Gray ◽  
Dorsal Periaqueductal Gray ◽  
Stimulation Of ◽  
Context Fear Conditioning

scholarly journals Effects of contextual fear conditioning and pentylenetetrazol on panic-like reactions induced by dorsal periaqueductal gray stimulation with N-methyl-D-aspartate.

2010 ◽  
Vol 3 (1) ◽  
pp. 67-72 ◽  
Author(s):  
Bruno de Oliveira Galvão ◽  
Bruno Costa Larrubia ◽  
Wouter Jan Hommes ◽  
Luis Fernando Cardenas ◽  
Antonio Pedro de Mello Cruz ◽  
...  
Keyword(s):  
Fear Conditioning ◽  
Periaqueductal Gray ◽  
Contextual Fear Conditioning ◽  
Contextual Fear ◽  
Dorsal Periaqueductal Gray

l-type calcium channels selectively control the defensive behaviors induced by electrical stimulation of dorsal periaqueductal gray and overlying collicular layers

2000 ◽  
Vol 111 (1-2) ◽  
pp. 175-185 ◽  
Author(s):  
Luiz Carlos Schenberg ◽  
Leonardo Pimentel de Almeida Marçal ◽  
Fabiana Seeberger ◽  
Maria Rufina de Barros ◽  
Eliana Cristina Murari Sudré
Keyword(s):  
Electrical Stimulation ◽  
Calcium Channels ◽  
Periaqueductal Gray ◽  
Dorsal Periaqueductal Gray ◽  
Defensive Behaviors ◽  
Stimulation Of
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